Machine for molding hollow walls.



No. 809,452. PATBNTED JAN. 9, 1996. I. L LANDIS MACHINE FOR MOLDINGHOLLOW WALLS. APPLmATIoN FILED APR 1 1906 z slums-suur '1.

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Specification of Letters Patent.

Patented Jan. 9, 1906.

Application filed fipril l, 1905. Serial No. 253,852.

To all whom t may concern,.-

Be it known that I, ISRAEL L. LANDIS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Machines for MoldingHollow Valls, of which the following is a specification.

This invention relates to machines for molding artificial-stonestructures, and has particular reference to hollow-wall construction.

The object of the invention is to provide a machine capable of moldinghollow buildingblocks into a wall, thus saving the cost and expenditureof time incidental to the manufacture of individual building-blockswhich areconverted into artificial stone before being laid in the formof a wa'll. f

Another object of the invention is to provide a collapsible core of verysimple construction and operated byasimple and powerfully-acting leverpivoted directly to the sides of the core which it is arranged to move.

The invention consists in the novel operating mechanism for relativelymovable mold-boards and in the adaptation of same to a collapsible core,hereinafter described in detail, illustrated in the drawings, andparticularly pointed out in the claims. p

Of the drawings, Figure 1 is a perspective view of a complete machine,including collapsible core, embodying my invention. Fig. 2 is anenlarged perspective view of the collapsible core. Fig. 3 is a top planview of the complete machine, the dotted vlines indicating the open orexpanded position of 'the mold-boards. Fig. 4 is an end view showing themachine in position on a section of hollow wall. Fig. 5 is an end viewof the core in its collapsed position. Figs. 6 and 7 are respectivelyedge and face views of partition or end gates.

Referring to the drawings, 2 and 3 represent the mold-boards, and 4- and5 the sides of the core. When both sides and ends of the latter aresurrounded by material or when the core is positioned as shown in Fig.1, any suitable end boards may be provided, attached, like sides 4 and5, to standards 6 7 and 8 9 or consisting of loose plates placed againstthe ends of the core. As this core is adapted for molding a wall with acontinuous hollow space without connecting webs between inner and outerwall-sections 10 and 11, Fig. 4, no ends are required for the core.

12 is an operating-lever pivoted at 13 to the mold-board 2 and at 14 tothe mold-board 3, Said lever is provided with a handle 15, arranged atan angle to that portion of the lever which extends across themold-boards or, as shown in Figs. 1 and 3, to lie against the mold-board2 when the machine is in position to receive the concrete or plasticmaterial. A rotatable catch 16, pivoted upon a screw 17, is adapted tolock the lever against movement and to assist in holding the mold-boardsagainst spreading movement while the material is being tamped in. Across-bar 18 is pivoted at 19 to mold-board 2 and at 2O to mold-board 3.Bottom cross-bars 21 and 22, lh aving apertures through their ends forkeys 23 and 24, preventspreading apart of the lower edges of themold-boards while concrete or cement is being packed or tamped inbetween the core and sides 2 and 3. Division or end plates 25 and 26 aremounted in grooves formed in the inner faces of the moldboards. Thesides 4 and 5 of the core are secured to standards 6, 7, 8, and 9, andthe latter are linked together at their upper ends by levers 29 and 31,rigidly secured to a shaft 28, having its bearings in the standards 7and 9. Standards 6 and S are pivoted to the levers, as at 27. Links 30connect the lower ends of standards in the same manner as levers 29 and3]. By the provision of shaft 23 the sides of the core may be operatedby either one of the levers, as well as by manipulation of both leversat the same time. A series of feet or pivoted plates 32 provide meansfor supporting the mold-boards laterally of the vertical plane of a wallor the vertical planes of the wall-sections separated by an interveningspace. In Fig. 3 the dotted lines indicate the positions of the pivotedplates when moved out of position to engage a wall. Starting from theposition of the machine shown in Fig. 1, its operation is as follows:Concrete or plastic material is filled in the spaces represented byfigures 33, 34, 35, and 36, suitable end boards or end plates(not shown)having -irst been placed against the ends of the core sides 4 and 5.When the cast has been formed, the catch 16 is rotated out of engagementwith the end of handle portion 15 of lever 12 and said handle swungoutwardly to the position shown by dotted IVO IOS

lines, thereby moving the mold-boards 2 and 3 apart and releasing thecast from the outer boards. By swinging levers 29 and 31 either` up ordown from normal horizontal positions (shown in Fig. 4) the sides 4 and5 will be moved toward each other. As shown in Fig. 5, side 5 remainsstationary and as a fulcrum for levers to move side 4. In any event thecore will be collapsed, so that it may be lifted out of the openingwhich it has formed in the cast. The machine is then moved another stepalong the wall and another cast formed,

have been replaced in the position shown in Fig. 1. Before the materialis tamped in the lower cross-pieces 21 and 22 and keys are placed inposition shown and before the lever comprising parts 12 and 15 is movedto release the mold-boards the keys 23 and 24 are removed and preferablyalso the members 21 and 22 to permit the mold -boards to move when thelever is operated. If a continuous hollow space is to be formed, onlyone end gate 25 or 26 will be employed-namely, the gate at the forwardend ofthe machine, which would be the gate 26 if the machine is movedalong the wall step by step toward the right, Figs. 1 and 3.

It is obvious that the machine may be placed upon any suitable flatsurface and individual building-blocks molded for special purposes byusing both end gates, as shown in Figs. 1 and 3, and suitableclosers forthe open ends of the core. The mold-boards 2 and 3 may b e made ofconsiderable length and the space between them subdivided by anysuitable number of gates 25 and 26 and a plurality of cores placed inthe resultant spaces between the gates, or one block may be formed at atime with the aid of a single core until all the spaces have beenfilled. By extending the mold-boards in such manner time would be savedin moving a shorter machine. The spaces between the ends of moldboardsand the respective gates may be considered as parts of the additionalspaces which would be provided for in a longer ma chine, where more thantwo gates are employed. The lever 29 of the core may be formed similarlyto lever 12 15, if desired.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination with a molding-machine comprisinga pair of mold-boards and means for moving said mold-boardslongitudinally and laterally relatively to each other, of a core havingsides movable vertically relatively to each other, connecting-links forthe lower parts of said sides and levers pivoted and so on, after themold-boards and coreA to the upper parts of said sides for yoking saidupper parts together and for moving said sides relatively in a verticalplane.

2. A molding-machine comprising moldboards movable laterally andlongitudinally relatively to each other and a core having sid esconnected by pivoted cross-bars or links, a lever overlying the tops ofsaid mold-boards and pivoted thereto, said lever arranged to move saidmold-boards in ahorizontal plane, a similar lever, or several thereof,pivoted to the sides of said core and adapted to move one of said sidesvertically and laterally relatively to the other side, and a connectingcross bar pivoted to said moldboards to assist in supporting the latterin their relative positions and to move with said lever.

3. In a molding-machine, the'combination of a pair of mold-boards, withmeans for moving said mold-boards longitudinally and laterallyrelatively to each other, a core having sides arranged to be movedrelatively to each other, means for supporting said sides in theirrelative positions, and gates, or partitionwalls, which are adjustablebetween said mold-boards to make an inclosed mold-space around saidcore.

4. In a molding-machine, in combination, a pair of mold-boards movabletoward and from each other in parallel planes, means for moving' saidmold-boards, means for yoking said mold-boards together temporarilyagainst relative movement during formation of a cast, means forpartitioning off a portion of the mold-space between said mold-boards, acore having sides arranged to move toward and from each other inparallel planes, said core being free of said mold-boards and adjustablein any suitable position within said portion of said mold-space.

5. In a molding-machine, the combination with a pair of mold-boardsmovable longitudinally and laterally relatively to each other in ahorizontal plane, of core sides movable relatively to each other in avertical plane, means for moving said mold-boards, means for yoking saidmold-boards together against relative movement, means for moving saidcore sides, means for supporting said moldboards upon a hollow wall, andremovable end gates or partition-walls which divide the space betweensaid mold-boards into a moldspace adapted to receive said core sides.

In testimony whereof l have hereunto set my hand in the presence of twosubscribing witnesses.

SRAEL L. LANDIS. Vitnesses DAVID WHITEFORD, FRED. L. KOEHLER.

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